Philips-CED-230-Service-Manual 电路图 维修手册.pdf

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1、Car AudioCED230 WW 1228 BG LE TABLE OF CONTENTS Location of PCBS1-1 Specifications1-2 Measurement setup1-3 Service aids1-4 Instructions on cd playability1-5/6 Disassembly diagram2/-1 2 Software version check1kHz,0dB, 10K load) 500mV 188x58x193mm 1.9kg -16V System: Frequency response: Signal/noise ra

2、tio: Total harmonic distortion: Channel separation: Video signal for mat: Video output: Disc digital audio system 20Hz-20k Hz 75dB Less than 0.3%(1KHz) 55dB NTSC/PAL/AUTO 1+/0.2V Screen size: Display resolution: Active area: Contrast ratio: Brightness: 3.0 inches. 320 x240 dots 65.52(W)x36.84(H) 300

3、 200cd/m (16 91) Frequency range -FM Frequency range -AM(MW) Usable sensitivity -FM Usable sensitivity -AM(MW)(S/N=20dB) Frequency response Stereo separation Signal/noise ratio 87.5-108.0MHz(Eur) 65.0-74.0MHz(OIRT) 87.5-107.9MHz(Ame) 522-1620KHz(Eur) 530-1710MHz(Ame) 8uV 30uV 30Hz-15KHz 30db(1KHz) 5

4、5dB RadioFans.CN 收音机爱 好者资料库 MEASUREMENT SETUP Tuner FM DUT RF Generator Bandpass LF Voltmeter e.g. PM5326 250Hz-15kHz e.g. 7122 707 48001 e.g. PM2534 S/N and distortion meter e.g. Sound Technology ST1700B Ri=50 Use a bandpass filter to eliminate hum(50Hz,100Hz) and disturbance from the pilottone(19k

5、Hz,38kHz). Tuner AM (MW,LW) DUT RF Generator Bandpass LF Voltmeter e.g. PM5326 250Hz-15kHz e.g. 7122 707 48001 e.g. PM2534 S/N and distortion meter e.g. Sound Technology ST1700B Ri=50 Frame aerial e.g. 7122 707 89001 To avoid atmospheric interference all AM-measurements have to be carried out in a F

6、araday s cage. Use a bandpass filter ( or at least a high pass filter with 250Hz) to eliminate hum ( 50Hz,100Hz ). DUT DUT L R LF Generator e.g. PM5110 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B L R LEVEL METER e.g. Sennheiser UPM550 with

7、 FF-filter S/N and distortion meter e.g. Sound Technology ST1700B Use Audio Signal Disc SBC429 4822 397 30184 (replaces test disc 3) Cassette Use Universal Test Cassette CrO2 SBC419 4822 397 30069 or Universal Test Cassette Fe SBC420 4822 397 30071 CD 1-3 1-4 SERVICE AIDS GB GB WARNING All ICs and m

8、any other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools also a

9、t this potential. ESD CLASS 1 LASER PRODUCT Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be used Safety components are marked by the symbol!. Lead free 1-5 INSTRUCTIONS ON CD PLAYABILITY Set remains closed! che

10、ck playability N N N Y Y Y check playability Exchange CDM fast lens cleaning playability ok? playability ok? playability ok? Customer complaint CD related problem Check playability Play a CD for at least 10 minutes ann lnfo for customer SET OK return set -For description see following pages- For fla

11、p loaders(=access to CD drive possible) clesning methodis recommended 1-6 Disassembly Diagram 2、Press the release key first, then take out the panel. 1、Pcollar main set with two L-keys. ull out the mounting from the 5、Take out the bottom cover with a forceps. 4、Take out the top cover with a forceps.

12、 3、loosen and take out the two bolts with a screw-driver. 6、loosen and take out the bolt with a screw-driver. 7、loosen and take out the bolt with a screw-driver. 8、loosen and take out the tbolt with a screw-driver. wo s9、P carefully ull out the two pieces of connection-pegs10、loosen and take out the

13、 four bolt with a screw-driver. s 2-12-1 11loosen and take out the bolt with a screw-driver, 、 15、Loosen and take out the six bolts with a screwdriver. 12loosen and take out the bolt with a screw-driver, 、 13loosen and take out the bolt with a screw-driver, 、 14、P carefully ull out the two pieces of

14、 connection-pegs Disassembly Diagram 2-22-2 3-13-1 Software version check & upgradeUpgrade software Check Servo software version Check MCU software version 1. Copy the file MCU.BIN into USB stick 2. Power on the device, and plug the USB stick into USB socket. After the device read the content in the

15、 USB, the LCD will show a upgrade menu, and enter into the upgrading status. 3. The LCD will appear a number (changed from 20 to 0), and when arrived the number 0, then appear a processing bar, which mean the device enters upgrading status. 4. In step 3. if want to enter into upgrading status quickl

16、y, press the key OKto confirm, the processing bar will appear immediately. 5. Disconnect the USB stick. 6. When software upgrade complete, the device will power off automatically. 1. Copy the file ROM.BIN into USB stick (note to delete the file MCU.BIN ). 2. Power on the device, and plug the USB sti

17、ck into USB socket. After the device read the content in the USB, the LCD will show a upgrade menu, and enter into the upgrading status. 3. The LCD will appear a number(changed from 20 to 0), and when arrived the number 0, then appear a processing bar, which mean the device enters upgrading status.

18、4. Press the key OK to confirm, the processing bar will appear immediately. 5. Disconnect the USB stick. 6. When software upgrade complete, the device will change to disc mode automatically. When the device is power on at the first time, in USB/SD/Disc mode, press the key in turn: stop up down left

19、right The LCD will display the servo software, MCU, TFT version number. 3-23-2 Malfunction check chart TDA7388 of main Main board which in Main board NO NO NOChange main Check tuner circuit and its conjoint part is good or bad NO NO NO NO NO NO SD no read Change servo Whether connect to SD Check the

20、 socket of SD SD USB no read Change servo Whether connect to USB Check the socket of USB SD 4-14-1 WIRING DIAGRAM 5-15-1 MAIN BOARD-CIRCUIT DIAGRAM-1 5-25-2 MAIN BOARD-CIRCUIT DIAGRAM-2 5-35-3 MAIN BOARD-PCB LAYOUT TOP/BOTTOM VIEW 6-16-1 SERVO BOARD-CIRCUIT DIAGRAM-1 6-26-2 SERVO BOARD-CIRCUIT DIAGR

21、AM-2 6-36-3 SERVODIAGRAM BOARD-LAYOUT TOP/BOTTOM VIEW 7-17-1 SB+CB BOARD-CIRCUIT DIAGRAM 7-27-2 SB+CB BOARD-PCB LAYOUT TOP/BOTTOM VIEW 8-18-1 LB+SD+CB BOARD-CIRCUIT DIAGRAM LB+SDPCB+CB BOARD- LAYOUT TOP/BOTTOM VIEW 8-28-2 9-19-1 KEY BOARD-CIRCUIT DIAGRAM 9-29-2 KEY BOARD-LAYOUT DIAGRAM TOP/ VIEWBOTTOM 10-110-1 EXPLODED VIEW-MAIN UNIT